JPS62227381A - Flash type sprinkler head - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention This invention relates to fire sprinkler heads, and more particularly to flush type sprinkler heads.

2. Description of the Related Art In a conventional flash type sprinkler head, a deflector is normally housed in a frame, and in the event of a fire, the deflector protrudes from the frame to spray fire extinguishing water. Because it needs to be housed in a frame attached to the main body, it has a structure in which a plurality of radial blades are bent upward at their tips. (Refer to Japanese Utility Model Publication No. 58-36985) Problems to be Solved by the Invention In the deflector of the conventional flush type sprinkler head, the fire extinguishing water discharged from the water outlet of the head body immediately collides with the deflector. Therefore, the particle size of the water sprayed becomes small.

For this reason, in places where the airflow speed is high or when the airflow is strong during a fire, the penetrating force against the airflow is weak and the fire extinguishing efficiency is reduced.

In view of the above-mentioned circumstances, an object of the present invention is to provide a flash type sprinkler head capable of sprinkling large-sized water with excellent fire extinguishing effect.

Means for Solving the Problems This invention provides a head body with a water outlet in the center.
Normally, a link mechanism that operates when a predetermined temperature is reached causes the stopper to close the water outlet and a deflector is housed in the head body, and when the link mechanism operates at a predetermined temperature, the water outlet opens and the deflector closes the water outlet. In a flush-type splinter head in which the deflector is lowered and exposed outside the head body, the deflector has a ceiling plate provided with an inlet for extinguishing liquid in the center, into which a water outlet is normally loosely fitted;
It is a rectangular cylinder with a bottom that is attached to the lower surface of the ceiling board, and its outer diameter is less than the diameter of the ceiling board, and the bottom has a hole in the center for the plug to sit in, and each side wall has a hole in the bottom. A rectangular cylinder with an inverted convex opening whose lower end is higher than the upper surface of the plug when the plug is seated, and a rectangular cylinder with a convex opening whose lower end is higher than the upper surface of the plug, and when the ceiling plate and the rectangular cylinder are lowered. The sprinkler head is equipped with a flush type sprinkler head characterized by a skirt portion surrounding the upper part of the opening.

When a fire or other incident occurs, the link mechanism is activated and the deflector is lowered and exposed outside the head body, and the water outlet is opened and pressurized water hits the deflector.

At this time, the pressurized water passes through the inlet and collides with the plug of the deflector, causing water flow C that scatters vertically toward the side wall, water 1'itc D that scatters diagonally toward the side wall, and water flow 1'itc D that scatters toward the corner wall. It is dispersed on the water flow that scatters in the opposite direction.

The water flow C hits the side wall and becomes an upward water flow C toward the ceiling board. This rising water flow C seals the opening due to its dynamic pressure, but a portion of it is pushed obliquely upward from the small Sekiguchi by the static pressure generated within the deflector, and becomes the water flow C1.

On the other hand, the water stream hits the side wall and flows towards the partition wall,
Furthermore, rising water t1 hits the partition wall and heads toward the ceiling board. It becomes E.

At this time, the water flow generates a swirling flow within the deflector, increasing the static pressure within the deflector.

Further, the water flow E changes its flow direction when it hits the partition wall, and becomes an upward water flow E toward the ceiling board.

The rising water flows C and E hit the ceiling plate and become a horizontal water flow E1, but this water flow E1 is discharged from the large opening to the outside of the rectangular cylinder and hits the skirt portion, becoming a downward water flow E2.

The water flow C1 that jumped out of the deflector in this way
The water stream E2 collides with the outside of the deflector, becomes large water droplets, and is sprayed around the sprinkler head.

An embodiment of the invention according to Embodiment 2 will be described with reference to the accompanying drawings, in which the same reference numerals have the same names and functions.

On the outer periphery of the head body 10 having a water outlet 11 in the center,
A horizontal groove hole 21, a protrusion 22 and a skirt portion 23 at the lower part of the inner surface.
The upper end of a cylindrical frame 20 having
In a space formed by the head main body 10 and the frame 20, a plug 30 for closing the water outlet 11 and a deflector 40 that descends within the frame together with the plug are provided.

This deflector 40 includes a ceiling plate 41 and a bottomed rectangular cylinder 43.
An inlet 42 is formed in the center of the ceiling plate 41.

The rectangular cylinder 43 has a square cross section and is attached to the lower surface of the ceiling plate 41, and its outer diameter is less than or equal to the diameter of the ceiling plate 41.

The bottom portion 431 has a hole 432 for attaching the stopper 30.
Further, each side wall 433 is formed with an opening 44 having an inverted convex shape in side view, consisting of a large horizontally long opening 441 at the top and a narrow U-shaped opening 442 at the bottom. Frontage 4
The lower end of No. 4 booth 442 is located at a higher position than the upper surface of plug body 30.

50 is a balancer consisting of a support plate 52 having leg pieces 53 and a reinforcing plate 54, and the protrusion 32 of the stopper 30 is inserted into the hole 51 of this balancer 50.

60, a dish-shaped first separation piece 62 having an annular inclined surface 61 on the periphery and a cup-shaped second separation piece 64 having an annular collar body 63 on the upper edge are joined by a fusible alloy. It is a thermal separation part.

70 is the head 71. Tsubabe hoo. Convex portion 73. They are a pair of arms having lower ends 74, and the plug body 30 is attached to the arms 70.
It is supported by the head part of the head.

This flush type sprinkler head A has frame 2
A link mechanism is constituted by the protruding part 22 of 0, the thermal separation part 60, and the arm 70, and the arm 70 supports the locking point between the hook part 72 and the protruding part 22 by the force acting on the head 71. Due to the rotational force acting, the lower #74 of the arm 70 engages with the inclined surface 61 with a strong lateral force.

When the thermal release part 60 is heated by the fire and the fusible alloy melts, the arm 0 starts rotating and its lower end 74 slides on the inclined surface 61 of the first release piece 62, and as a result of this sliding, the
The s1 separation piece 62 is peeled downward from the second separation piece 64 and allowed to fall.

Then, the arm 70 is released from the lower part #474,
- It rotates and falls while separating from the second separation piece 64. At the same time, the stopper 30 is guided by the tip of the ceiling plate 41 of the deflector 40 and the leg piece 53 of the balancer 50 by its own weight and the pressure of the extinguishing liquid, and descends.

As shown in FIG. 6, the stopper 30 and the deflector 40 stop descending when the ceiling plate 41 is engaged with the protrusion 22 of the frame 20, and the balancer 50 stops engaging with the protrusion 32 of the stopper 30. It unravels and falls.

The extinguishing liquid discharged from the water outlet 11 is transferred to the inlet 4
2 into the deflector 40 and hit the stopper 30,
The water is dispersed into a water stream C that scatters perpendicularly to the side wall 433, a water stream that scatters obliquely toward the side wall 433, and a water stream E that scatters toward the corner wall 434. At this time, the plug body 30 functions as a cone that changes the direction of the water.

Then, the water flow C hits the side wall 433, changes its flow direction, and becomes an upward water flow toward the ceiling plate 41. This water tlit
C seals the opening 44 with its dynamic pressure, but a portion of it seals the booth 44 with the static pressure F generated within the deflector 40.
It is pushed diagonally upward from 42 and becomes a water flow C1.

On the other hand, the water stream hits the side M434 and changes its flow direction and flows toward the corner wall 434, but it also hits the corner wall 434 and becomes an upward water flow E toward the ceiling plate 41. At this time, the water flow causes a swirling flow in the deflector 40, so the deflector 40 is filled with extinguishing liquid and the static pressure increases.

Further, the water flow E hits the corner wall 434, changes its flow direction, and becomes an upward water flow E toward the ceiling plate 41.

Then, the rising water flows C and E hit the ceiling plate 41, change their flow direction, and become a lateral water flow E1, but this water flow E1 seeks escape by the extinguishing liquid successively supplied from the inlet 42. The water flows out of the rectangular cylinder 43 through the large opening 441, hits the skirt portion 23, changes its flow direction, and becomes a water flow E2 that heads diagonally downward. At this time, the skirt part 23
functions as part of the deflector 40.

The water flow C1 and the water flow E2 that have flown out of the deflector 40 in this manner collide outside the deflector, turn into water droplets, and are sprayed around the sprinkler head A.

At this time, the water stream C1 and the water stream E2 follow a long path before colliding outside the rectangular cylinder 43, so the energy at the time of collision is small, and large-sized water droplets are obtained.

Other Embodiments The present invention is not limited to the above embodiments; for example, the rectangular cylinder 43 may have a triangular, pentagonal, or hexagonal shape.

In addition, the deflector 40 may be one that slides down the peripheral wall of the head body 10 or a vertical bottle support provided on the collar 12 of the head body 10, but in the former case, In the latter case, a protrusion for locking a ceiling plate is provided at the lower part of the peripheral wall of the head body 10, and in the latter case, a plurality of holes are provided in the ceiling plate for loosely fitting vertical pin supports.

The skirt portion may be provided on the ceiling plate instead of the frame 20, or may be provided on the lower part of the peripheral wall of the head body.

Effects of the Invention Since the present invention is configured as described above, the fire extinguishing liquid discharged from the water outlet collides with the stopper, then hits the side wall and bulkhead, and rises inside the deflector while sealing the opening. At this time, some of the fire extinguishing liquid is pushed obliquely upward from the small opening by the static pressure generated within the deflector and becomes a water flow C1.

Then, the water flow rising inside the deflector hits the ceiling plate, flows out of the rectangular cylinder through the large opening, further hits the skirt portion, becomes a downward water flow E2, and collides with the water flow C1. At this time, the rainwater flows CI and E2 follow a long path before colliding, so the energy at the time of collision is small.

Therefore, it is possible to obtain water droplets with a larger diameter than in the conventional example, resulting in water droplets of extinguishing liquid that have the ability to penetrate strong air currents and strong flames.

[Brief explanation of drawings]

1 to 5 are views showing embodiments of the present invention, in which FIG. 1 is a longitudinal sectional view, FIG. 2 is a plan view of the deflector, FIG. 3 is a front view, and FIG. 4 is an IV of FIG. 3. -+VV line sectional view FIG. 5 is a VV line sectional view of FIG. 2, and FIG. 6 is a view showing the state of use. 10...Head body 11...Water outlet 23...Skirt portion 30...Plug body 40...Deflector 41...・Ceiling plate 42... Inflow port 43... Square cylinder 431... Bottom 432... Hole 44... Opening 433. ...Side wall agent patent attorney Yu Saito (2 idiots) Figure 1 Figure 2 Figure 3 Steel Figure 4

Claims (1)

[Claims] 1) Inside the head body having a water outlet in the center, there is usually a
A link mechanism that operates when a predetermined temperature is reached causes the stopper to close the water outlet and house the deflector within the head body, and when the link mechanism operates at a predetermined temperature, the water outlet opens and the deflector descends. In a fire sprinkler head that is exposed outside the head body, the deflector has a ceiling plate provided with a fire extinguishing liquid inlet in the center into which a water outlet is normally loosely fitted, and a bottomed bottom attached to the bottom of the ceiling plate. It is a rectangular cylinder whose outer diameter is less than or equal to the diameter of the ceiling plate, and the bottom has a hole in the center where the plug is seated, and each side wall has a hole at the bottom where the plug sits in the hole at the bottom. It consists of a rectangular tube body with an inverted convex opening located at a higher position than the top surface of the plug body, and a skirt portion that surrounds the tops of the multiple openings of the rectangular tube body when the ceiling plate and the rectangular tube body are lowered. A flush type sprinkler head characterized by: 2) The flush type sprinkler according to claim 1, wherein the ceiling plate slides down the peripheral wall of the head body, and the head body has a protrusion that locks the ceiling plate at the lower part of the peripheral wall. head. 3) The head main body has a plurality of columns on the lower surface thereof having a locking body at the lower end, and the ceiling plate has a plurality of holes into which the columns are loosely fitted. Flush type sprinkler head. 4) The flush type sprinkler head according to any one of claims 1, 2, and 3, wherein the skirt portion is provided integrally with the peripheral wall of the head body. 5) The flush type sprinkler head according to claim 1, wherein the skirt portion is provided on a ceiling plate. 6) The flush type sprinkler head according to claim 1, wherein the peripheral wall of the head body is formed as a frame.